CN209482123U - A kind of bridge elastoplasticity buffer limit shock absorption energy consuming device - Google Patents

A kind of bridge elastoplasticity buffer limit shock absorption energy consuming device Download PDF

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Publication number
CN209482123U
CN209482123U CN201920161007.XU CN201920161007U CN209482123U CN 209482123 U CN209482123 U CN 209482123U CN 201920161007 U CN201920161007 U CN 201920161007U CN 209482123 U CN209482123 U CN 209482123U
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hole
elastoplasticity
limit
energy consumption
shock absorption
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陈克坚
曾永平
董俊
宋随弟
袁明
庞林
郑晓龙
杨国静
陶奇
苏延文
徐昕宇
周川江
颜永逸
冯振兴
包友
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China Railway Eryuan Engineering Group Co Ltd CREEC
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China Railway Eryuan Engineering Group Co Ltd CREEC
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Abstract

The utility model relates to a kind of bridge elastoplasticity buffer limit shock absorption energy consuming devices, including elastoplasticity limit damping energy consumption bar and adjustable connection board, connecting plate is equipped with inner hole, consuming energy each cross section of bar can be simultaneously into the maximum ductile deformation of yield situation realization, energy consumption bar bottom is connected to pier coping portion, inner hole is protruded at the top of energy consumption bar, and circumferentially there are spacing n with inner hole wall at its top, n >=0, connecting plate is equipped with backing plate, backing plate is equipped with girder, there is gap between at the top of girder bottom and energy consumption bar, girder is equipped with through-hole one, backing plate is equipped with through-hole two, connecting plate is equipped with through-hole three, through-hole one is equal with two diameter of through-hole, the diameter of through-hole three is greater than the diameter of through-hole two, through-hole one, through-hole two and through-hole three are bolted, connecting plate periphery is equipped with limited block, limited block is connected to backing plate, limited block There is gap between connecting plate, be threaded with adjusting bolt on limited block, the one end for adjusting bolt abuts connecting plate.

Description

A kind of bridge elastoplasticity buffer limit shock absorption energy consuming device
Technical field
The utility model relates to bridge field, especially a kind of bridge elastoplasticity buffer limit shock absorption energy consuming device.
Background technique
Existing long-span bridge girder construction makes winner since train traction brake force is larger in bullet train driving process Beam bears biggish horizontal force, and tractive-braking efforts will lead to girder and biggish horizontal displacement occurs (especially for full floating The loading test of half-through CFST arch bridge of system, cable-stayed bridge across steel truss greatly etc.), it was displaced conference and rail is caused to stretch hair, train is led It will be given birth to when drawing braking load and excessive main beam deformation caused under other operation load (such as temperature load) collective effects disconnected Rail destroys, and directly affects traffic safety, it is therefore desirable to the girder displacement under normal operation state is limited using limiting device, greatly Span bridge generallys use fluid linking damper and carrys out command displacement, but it is primarily used to that geological process lower girder is prevented to be displaced Greatly, while the seismic energy protection bridge structure that dissipates is destroyed, and damper is generally located between girder and bridge tower thwart beam, encircles Bridge girder and arch crossbeam between or continuous beam pier beam between, but due to train pass a bridge when, train causes the velocity variations of girder Value is often smaller, and damper can not identify the velocity variations value, so the effect of damping limit, the i.e. limit of damper can not be played Bit function can not be played normally, this external damper cost is higher, and cost performance is very poor for medium and small span bridge.
In addition, existing bridge metal damping shock absorption energy-consuming device, often size is smaller, provided horizontal rigidity It is low, seismic energy dissipation ability is limited, be unable to satisfy the antidetonation demand of long-span bridge girder construction, medium and small span bridge structure can only be solved Subtract shock insulation demand, why cannot be by larger, main cause: metal damper energy-consuming device is typically mounted at beam bottom Need for built-in fitting to be installed to beam bottom and pier top position between pier top, before installation in advance, metal damping energy dissipation device is just installed In beam bottom portion and pier top built-in fitting, and after increasing limiting device size, device own wt is larger, and one side construction site is empty Between to be limited lifting difficult, on the other hand because there are many uncertain construction errors during span bridge construction, often lead Cause beam bottom and pier top built-in fitting can not good centering, it may appear that certain deviation, device upper and lower end installation accuracy it is difficult to ensure that It is required that if installation meeting damaging device, or even the normal stress of influence bridge structure by force, will generate destruction to bridge when serious Effect.
Therefore, it for Longspan Bridge, only cannot simply amplify existing highway bridge metal damping unit, need to design completely new Metal damping unit.
Utility model content
The goal of the invention of the utility model is: in view of the problems of the existing technology, i.e. existing highway bridge metal damping subtracts Shake energy-consuming device cannot directly amplify its size to meet the actual demand of Longspan Bridge damping energy consumption limit, provide a kind of bridge Beam elastoplasticity buffer limit shock absorption energy consuming device.
To achieve the goals above, the technical solution adopted in the utility model are as follows:
A kind of bridge elastoplasticity buffer limit shock absorption energy consuming device, including elastoplasticity limit damping energy consumption bar and adjustable company Fishplate bar, the adjustable connection board are equipped with inner hole, and the elastoplasticity limit damping energy consumption each cross section of bar can enter simultaneously bends Take state and realize maximum ductile deformation, elastoplasticity limit damping energy consumption bar bottom be connected to bridge pier or bridge tower thwart beam or The top of person's arch rib crossbeam, protrudes into the inner hole at the top of elastoplasticity limit damping energy consumption bar, and its top it is circumferential with it is described There are spacing n, n >=0, the adjustable connection boards to be equipped with backing plate for inner hole wall, and the backing plate is equipped with girder, the girder bottom There is gap between at the top of portion and elastoplasticity limit damping energy consumption bar, the girder is equipped with through-hole one, on the backing plate Equipped with through-hole two, the adjustable connection board is equipped with through-hole three, and the through-hole one is equal with two diameter of through-hole, described logical The diameter in hole three is greater than the diameter of the through-hole two, and the through-hole one, the through-hole two and the through-hole three are bolted, The adjustable connection board periphery is equipped with limited block, and the limited block is connected to the backing plate, the limited block and institute Stating has gap between adjustable connection board, adjusting bolt is threaded on the limited block, described to adjust the one of bolt End abuts the adjustable connection board.
Wherein, the elastoplasticity limit damping energy consumption bar is the structural member of steel material, and each cross section is pressed along short transverse According to the design principle of " beam of uniform strength ", i.e., by change the elastoplasticity limit damping consume energy bar section size make component compared with Enter surrender in a wide range of simultaneously, under the premise of meeting horizontal rigidity demand, it is ensured that steel using amount most saves, and obtains optimal design Size, it is high order nonlinear curve that rod piece diameter change curve, which can be calculated, and design in this way can limit for the elastoplasticity Damping energy consumption bar provides bigger ductile deformation;The diameter of the through-hole three is adjustment of displacement amount, can be according to practical need Seek design, realize the Level tune of the adjustable connection board, the gap for protecting under geological process, beam and pier occur compared with The girder and elastoplasticity limit damping energy consumption bar be not stuck when big relative displacement.
Using a kind of bridge elastoplasticity buffer limit shock absorption energy consuming device described in the utility model, Longspan Bridge is realized The Bit andits control of structure girder when train is passed a bridge has good ductility after device surrender in, when violent earthquake occurs Deformability, can effectively dissipate seismic energy, reduce destruction of the earthquake to bridge structure, protect bridge structure, and have There is the function of multidirectional limit, it can be achieved that the installation accuracy of large scale device requires, guarantees the normal use and function of device itself The normal performance of energy, under the premise of realizing identical limit function, the device is more more economic and practical than bridge viscous damper, It can be changed quickly after shake, be also applied for medium and small span bridge.
Preferably, elastoplasticity limit damping energy consumption bar includes bottom plate, the bridge pier or bridge tower thwart beam or arch rib The top of crossbeam is equipped with pre-embedded steel slab, and the bottom plate and the pre-embedded steel slab are bolted.
Preferably, the elastoplasticity limit damping energy consumption bar includes stiffener, and the stiffener side is connected to the bullet Plasticity limits damping energy consumption bar bottom peripheral edge, and the stiffener bottom edge is connected to the bottom plate.
Preferably, the elastoplasticity limit damping energy consumption bar includes tenon, and the tenon is located at elastoplasticity limit and subtracts The top of shake energy consumption bar, the tenon are connected in the adjustable connection board.
Using this structure setting, first the adjustable connection board, the backing plate and the girder can be assembled In place, then its whole and described tenon is clamped, is adjusted convenient for the installation of component big in bridge construction and precision.
Preferably, the top of the tenon is plane.
Under geological process, when biggish relative displacement occurs for the girder and pier, described in the displacement drive of the girder Adjustable connection board is subjected to displacement, and the adjustable connection board inner wall abuts and drives the tenon that corresponding horizontal position also occurs It moves, and the tenon top surface, by run-off the straight, entire top surface side is offset downward, and side is offset up, if be added without described Backing plate makes have the gap between the plane at the top of the tenon and the bottom plane of main girder, but allows the tenon and described Girder closing connection, then the tenon and the girder will be stuck in seismic process, influence the stress of structure, therefore described Backing plate is primarily used to make between the tenon and the girder solve the tenon there are the gap and greater level position occurs Prevent that there is a situation where very hard impacts or stuck with the girder on the upside of it when shifting.
Preferably, the elastoplasticity limit damping energy consumption bar is the structural member of high ductility steel material.
Using this structure setting, it can be achieved that long-span bridge girder construction is limited in the level of bullet train load action lower girder , the multidirectional displacement of bridge is effectively limited under seismic loading, has the function of good damping energy consumption, dissipate seismic energy well Amount protects bridge member, and can effectively limit the multidirectional displacement of bridge, prevents to fall beam earthquake.
Preferably, the backing plate and the limited block are the structural member of steel material, the backing plate and the limiting block Block welding.
Preferably, the cross section of the adjustable connection board is rectangle.
Preferably, the limited block is respectively set in the surrounding of the adjustable connection board.
Preferably, each limited block is equipped at least one described adjusting bolt.
Preferably, the girder is steel girder or concrete girder, when the girder is concrete girder comprising bottom Portion's pre-embedded steel slab, the through-hole one pass through the bottom pre-embedded steel slab.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are:
1, with a kind of bridge elastoplasticity buffer limit shock absorption energy consuming device described in the utility model, long-span bridge is realized The Bit andits control of girder construction girder when train is passed a bridge has good prolong after device surrender in, when violent earthquake occurs Property deformability, can effectively dissipate seismic energy, reduce destruction of the earthquake to bridge structure, protect bridge structure, and Have the function of multidirectional limit, it can be achieved that the installation accuracy of large scale device requires, guarantee device itself normal use and The normal performance of function, under the premise of realizing identical limit function, the device is more economical more suitable than bridge viscous damper With, it is can be changed quickly after shake, it is also applied for medium and small span bridge;
2, with a kind of bridge elastoplasticity buffer limit shock absorption energy consuming device described in the utility model, the elastoplasticity limit Position damping energy consumption bar includes tenon, and the tenon is located at the top of elastoplasticity limit damping energy consumption bar, the tenon clamping It can be first by the adjustable connection board, the backing plate and the master using this structure setting in the adjustable connection board Beam assembles in place, then that it is whole with tenon clamping, installation and precision tune convenient for component big in bridge construction Section;
3, with a kind of bridge elastoplasticity buffer limit shock absorption energy consuming device described in the utility model, the elastoplasticity limit Position damping energy consumption bar is the structural member of high ductility steel material, using this structure setting, it can be achieved that long-span bridge girder construction is in height The Horizontal limiting of fast High-speed Train Loads lower girder effectively limits the multidirectional displacement of bridge under seismic loading, has good Damping energy consumption function, dissipate seismic energy well, protects bridge member, and can effectively limit the multidirectional displacement of bridge, prevents Fall beam earthquake.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of limit shock absorption energy consuming device described in the utility model;
Fig. 2 is the partial enlarged view of Fig. 1, wherein n=0;
Fig. 3 is the A-A schematic diagram of Fig. 2;
Fig. 4 is the partial enlarged view of Fig. 1, wherein n > 0;
Fig. 5 is schematic view of the mounting position of the limit shock absorption energy consuming device described in the utility model on bridge;
Fig. 6 is the partial enlarged view of Fig. 5.
The bar marked in the figure: the limit damping of 1- elastoplasticity is consumed energy, 11- bottom plate, 12- stiffener, 13- tenon, 2- arch rib crossbeam, 21- pre-embedded steel slab, 3- adjustable connection board, 4- backing plate, 5- girder, 6- limited block, 7- adjust bolt, the gap 8-, the gap 9-.
Specific embodiment
With reference to the accompanying drawing, the utility model is described in detail.
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only to explain this Utility model is not used to limit the utility model.
Embodiment
As shown in figures 1 to 6, a kind of bridge elastoplasticity buffer limit shock absorption energy consuming device described in the utility model, including bullet Plasticity limits damping energy consumption bar 1 and adjustable connection board 3, and the elastoplasticity limit damping energy consumption 1 bottom of bar is connected to arch rib cross 2 top of beam, the adjustable connection board 3 are equipped with inner hole.
As seen in figs. 5-6, which can be applied in combination with friction pendulum support, Around the friction pendulum support.
The elastoplasticity limit damping energy consumption bar 1 is the structural member of high ductility special steel material, and each cross section is along height Direction is made by changing the size in the elastoplasticity limit damping energy consumption 1 section of bar according to the design principle of " beam of uniform strength " Component enters surrender simultaneously in a big way, under the premise of meeting horizontal rigidity demand, it is ensured that steel using amount most saves, and obtains Optimal design size, it is high order nonlinear curve that rod piece diameter change curve, which can be calculated, and design can be the bullet in this way Plasticity limits damping energy consumption bar 1 and provides bigger ductile deformation's ability;Using this structure setting, it can be achieved that Longspan Bridge knot Structure effectively limits the multidirectional displacement of bridge under seismic loading, has in the Horizontal limiting of bullet train load action lower girder 5 Good damping energy consumption function, dissipate seismic energy well, protects bridge member, and can effectively limit the multidirectional position of bridge It moves, prevents to fall beam earthquake.
The inner hole is protruded at the top of the elastoplasticity limit damping energy consumption bar 1, and its top is circumferentially deposited with the inner hole wall In spacing n, n >=0, as shown in Fig. 2, 1 top of the elastoplasticity limit damping energy consumption bar is circumferential to abut the inner hole when n=0 Wall, the elastoplasticity limit damping energy consumption bar 1 can directly limit the displacement of the girder 5 caused by train speed changing value, As shown in figure 4, the spacing n is used to adjust the temperature deformation of bridge structure and for seismic energy dissipation when n > 0.
The adjustable connection board 3 is equipped with backing plate 4, and the backing plate 4 is equipped with girder 5, and the girder 5 is steel girder, 5 bottom of girder and elastoplasticity limit damping energy consumption bar have gap 8 between 1 top, and the gap 8 is used for protecting field Under shake effect, the girder 5 and elastoplasticity limit damping energy consumption bar 1 do not block when biggish relative displacement occurs for beam and pier Extremely.
The elastoplasticity limit damping energy consumption bar 1 includes bottom plate 11, stiffener 12 and tenon 13, and the arch rib crossbeam 2 pushes up Portion is equipped with pre-embedded steel slab 21, and the bottom plate 11 and the pre-embedded steel slab 21 are bolted, 12 side of the stiffener connection In elastoplasticity limit damping energy consumption 1 bottom peripheral edge of bar, 12 bottom edge of stiffener is connected to the bottom plate 11, the tenon 13 are located at the top of elastoplasticity limit damping energy consumption bar 1, and the top of the tenon 13 is plane, and the tenon 13 is connected in The adjustable connection board 3 can be first by the adjustable connection board 3, the backing plate 4 and described using this structure setting Girder 5 assembles in place, is then clamped its entirety with the tenon 13, convenient for the installation and essence of component big in bridge construction Degree is adjusted.
The girder 5 is equipped with through-hole one, and the backing plate 4 is equipped with through-hole two, and the adjustable connection board 3 is equipped with logical Hole three, the through-hole one is equal with two diameter of through-hole, and the diameter of the through-hole three is greater than the diameter of the through-hole two, described Through-hole one, the through-hole two and the through-hole three are bolted, and the diameter of the through-hole three is adjustment of displacement amount, It can design according to actual needs, realize the Level tune of the adjustable connection board 3, the cross section of the adjustable connection board 3 For rectangle, the limited block 6, the backing plate 4 and the limiting block is respectively set in the surrounding of the adjustable connection board 3 Block 6 is the structural member of steel material, and the backing plate 4 and the limited block 6 weld, each limited block 6 and it is described can There is gap 9, there are three adjust bolt 7, each adjusting for threaded connection on the limited block 6 between mode connecting plate 3 One end of bolt 7 abuts the corresponding adjustable connection board 3.
With a kind of bridge elastoplasticity buffer limit shock absorption energy consuming device described in the utility model, Longspan Bridge is realized The Bit andits control of structure girder when train is passed a bridge has good ductility after device surrender in, when violent earthquake occurs Deformability, can effectively dissipate seismic energy, reduce destruction of the earthquake to bridge structure, protect bridge structure, and have There is the function of multidirectional limit, it can be achieved that the installation accuracy of large scale device requires, guarantees the normal use and function of device itself The normal performance of energy, under the premise of realizing identical limit function, the device is more more economic and practical than bridge viscous damper, It can be changed quickly after shake, be also applied for medium and small span bridge.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model Protection scope within.

Claims (10)

1. a kind of bridge elastoplasticity buffer limit shock absorption energy consuming device, which is characterized in that including elastoplasticity limit damping energy consumption bar (1) and adjustable connection board (3), the adjustable connection board (3) are equipped with inner hole, the elastoplasticity limit damping energy consumption bar (1) each cross section can enter the maximum ductile deformation of yield situation realization, elastoplasticity limit damping energy consumption bar (1) bottom simultaneously Portion is connected to the top of bridge pier or bridge tower thwart beam or arch rib crossbeam, stretches at the top of elastoplasticity limit damping energy consumption bar (1) Enter the inner hole, and circumferentially there are spacing n with the inner hole wall at its top, n >=0, the adjustable connection board (3), which is equipped with, pads Plate (4), the backing plate (4) are equipped with girder (5), girder (5) bottom and elastoplasticity limit damping energy consumption bar (1) top There are gap (8) between portion, the girder (5) is equipped with through-hole one, and the backing plate (4) is equipped with through-hole two, described adjustable Connecting plate (3) is equipped with through-hole three, and the through-hole one is equal with two diameter of through-hole, and the diameter of the through-hole three is greater than described The diameter of through-hole two, the through-hole one, the through-hole two and the through-hole three are bolted, the adjustable connection board (3) periphery is equipped with limited block (6), and the limited block (6) is connected to the backing plate (4), the limited block (6) and described There are gap (9) between adjustable connection board (3), be threaded on the limited block (6) and adjust bolt (7), the tune The one end for saving bolt (7) abuts the adjustable connection board (3).
2. limit shock absorption energy consuming device according to claim 1, which is characterized in that the elastoplasticity limit damping energy consumption bar It (1) include that the top of bottom plate (11), the bridge pier or bridge tower thwart beam or arch rib crossbeam is equipped with pre-embedded steel slab (21), the bottom Plate (11) and the pre-embedded steel slab (21) are bolted.
3. limit shock absorption energy consuming device according to claim 2, which is characterized in that the elastoplasticity limit damping energy consumption bar It (1) include stiffener (12), stiffener (12) side is connected to elastoplasticity limit damping energy consumption bar (1) bottom week Edge, stiffener (12) bottom edge are connected to the bottom plate (11).
4. limit shock absorption energy consuming device according to claim 1, which is characterized in that the elastoplasticity limit damping energy consumption bar It (1) include tenon (13), the tenon (13) is located at the top of elastoplasticity limit damping energy consumption bar (1), the tenon (13) adjustable connection board (3) are connected in.
5. limit shock absorption energy consuming device according to claim 4, which is characterized in that the top of the tenon (13) is flat Face.
6. limit shock absorption energy consuming device according to claim 1, which is characterized in that the elastoplasticity limit damping energy consumption bar It (1) is the structural member of high ductility steel material.
7. limit shock absorption energy consuming device according to claim 1, which is characterized in that the backing plate (4) and the limiting block Block (6) is the structural member of steel material, the backing plate (4) and the limited block (6) welding.
8. limit shock absorption energy consuming device according to claim 1-7, which is characterized in that the adjustable connection board (3) cross section is rectangle.
9. limit shock absorption energy consuming device according to claim 8, which is characterized in that the four of the adjustable connection board (3) The limited block (6) is respectively set week.
10. limit shock absorption energy consuming device according to claim 9, which is characterized in that set on each limited block (6) There is at least one described adjusting bolt (7).
CN201920161007.XU 2019-01-29 2019-01-29 A kind of bridge elastoplasticity buffer limit shock absorption energy consuming device Active CN209482123U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112323615A (en) * 2020-11-24 2021-02-05 程勇 Bridge elastic-plastic limiting damping energy dissipation device and design method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112323615A (en) * 2020-11-24 2021-02-05 程勇 Bridge elastic-plastic limiting damping energy dissipation device and design method

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